RISE OF THE SAFAVI DYNASTY 255 993 (I585) he killed 20,000 of the enemy. Yet again, a month later, he inflicted crushing losses on the invaders; but shortly afterwards he himself suffered defeat because 300.0 of his men were driven into a marsh. Not a whit discouraged^ the intrepid Persian raided across the Aras and ravaged Salmas and Erivan. But internal divisions prevented these victories from bearing fruit, and Tabriz remained in the hands of the Turks. A plot contrived by the tribesmen to exclude Hamza Mirza from the throne proved futile, but the gallant Prince was assassinated by one of his favourites in A.H. 995 (1587), and with his death all immediate hope of expelling the invaders dis- appeared.